Indicating caliper



March 15, 1932.

F. SCHNEIDER INDICATiNG CALI'PER' Filed Oct. 29, 1930 F950 Say/v5 105/? INVENTOR ATTORNEY Patented Mar. 15, 1932 FRED SCHNEIDER, OF CLEVELAND, OHIO INDIGATING CALIBER AppIication filed October 29, 1930. Serial No. 492,028.

This invention relates to improvements in calipers, the general object of the invention being to providean indicator finger, with means for causing the finger to move over a 51 dial when the caliper is adjusted so that the readings can be easily and quickly made.

This invention also consists in certain other features of construction and in the combination and arrangement of the several 7 parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is an elevation of the invention. Figure 2 is an edge view of the upper part thereof, with parts in section.

Figures. 3 and A are detail views. In the drawings, the numerals 1 and 2 indicate the legs of the calipers which are connected together at their upper ends by the usual spring 8. The leg 1 is formed of the two parts 1 and 1", the lower part 1" being pivoted at its upper end to the upper part 1, as shown at 4:, and this upper part is of channel shape in cross section, as shown. A small spring 5 extends transversely across the open side of the part 1' and yieldingly holds the lower part in the upper part.

The usual threaded shaft 6 is pivoted to the part 1 of the leg 1 by the screw 7 and passes through the pivoted lug 8 of the leg 2, a nut 9 being threaded on the shaft and engaging a sleeve 10 which is arranged on the shaft and bears against the stud 8 so as to make adjustment of the calipers. A curved rack 11 is pivoted to the upper part of section 1" of the leg 1 by the screw 11' which passes through a hole in the section 1. This rack has an elongated slot 12 therein through which passes a pin 13 carried by the leg 2. The teeth of the rack engage a pinion 14: which forms a part of a gear train 15 carried by the leg 2. The last gear 16 of this train is attached to a shaft 17 to which a finger 18 0 is connected so that the finger will be caused to move over a dial 19 when the legs are moved. The dial is fastened to the leg 2, as shown at 20, and is enclosed by a casing 27.

From the foregoing, it will be seen that the relative movements of the legs of the calipers will be communicated to the finger so that the finger will move over the dial and thus give the readings. The drawings show the invention applied to inside calipers, but of course, it will be understood that it can also be applied to outside calipers.

A spherical member 28 is connected with the lower end of each leg and is removably and adjustably held to the leg by having a stem fitting in the socket in the leg and held 05 in place by the set screw 29.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.

What I claim is A device of the class described comprising a pair of legs, a spring connected with the upper ends of the legs, one leg being formed with two parts, the upper part being of channel form and the upper end of the lower part fitting therein, means for pivoting the upper end of the lower part to the upper part, and a spring bridging the open side of the channel shaped part and engaging a portion of the lower part.

In testimony whereof I aflix my signature.

FRED SCHNEIDER. 1 

